The Egg-Plant's name comes from the eggplant, a type of fruit. It also shares its name with a type of nightshade (hence the appearance).

Also, some Egg-Plants will spit out Needlenoses, but as long as a Yoshi has six eggs, it can't spit any out. There are four Needlenose-spitting Egg-Plants in the Island Museum. They can be viewed in the botanical enemy exhibit.

In Yoshi's Woolly World Egg Plants are knitted and in replacement for eggs, they shoot out yarn balls of multiple colors. Egg Plants appear less frequently in the game, with only a few appearances. Notably, Egg Plants don't have a variation that spit out Needlenoses in this game.